131022110231 has 4 divisors (see below), whose sum is σ = 133809814752. Its totient is φ = 128234405712.

The previous prime is 131022110227. The next prime is 131022110273. The reversal of 131022110231 is 132011220131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131022110231 - 2² = 131022110227 is a prime.

It is a super-2 number, since 2×131022110231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131022130231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393852190 + ... + 1393852283.

It is an arithmetic number, because the mean of its divisors is an integer number (33452453688).

Almost surely, 2^131022110231 is an apocalyptic number.

131022110231 is a deficient number, since it is larger than the sum of its proper divisors (2787704521).

131022110231 is an equidigital number, since it uses as much as digits as its factorization.

131022110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787704520.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131022110231 its reverse (132011220131), we get a palindrome (263033330362).

The spelling of 131022110231 in words is "one hundred thirty-one billion, twenty-two million, one hundred ten thousand, two hundred thirty-one".